John d



(NE Model.)

J. D. HASS.

DIE EOE ELANGING SHEET METAE VESSELS.

No. 249.042. Patented Nov. 1,1881.

l I l.

| l 1 l l 'i 7`llNiTED STATES PATENT OFFICE.

JOHN D. BASS, OF'NEW YORK, N. Y.

DIE FOR FLANGING SHEET-METAL VESSELS.

SPECIFICATION forming part of Letters Patent No. 249,042, dated November 11881.

Application filed September 3, 1881.

To all whom it may concern Be it known that I, JOHN D. Hass, of the city and county of New York, in the State of` New York, have invented certain new and useful Improvements in Dies for Flanging Sheet- MetalArticles, ofwhch the following isa specification.

p In` the manufacture of cans and pails from tin or other sheet metal the bodies or cylindric 1o portions thereof are sometimes formed with outwardly-projecting flanges at the ends, and the heads are secured by folding their edges inward over such flanges. The langing is often done by slipping the straight cylindric body of the can or pail upon the exterior of a cylinder, which it tits closely, and which has, at the lower end an outwardly-projectingilange, which turns the lower end ofthe body outward to form one flange, when apnnch, which is fixed to a press-plunger, descends with a blow upon the upper end of the body, to l'orm a flange thereon. The straining ofthe can or pail body outward by the pressure of the die and punch in forming the llanges is very liable to open or burst the longitudinal seam; and the object of my invention is to support the can or pail body upon the outside as well as upon the in \side while the flanges are being formed, and

preventitfrom beingdistorted in the operation.

To this end theinvention consists in the combination,in a Hanging-die, ofa cylinder or mandrel, over which the article to be flanged is slipped, and which has a flange at one end, in which is a groove at its juncture with the mandrel, for forming a ange upon one end of said article, and a sectional clamp fitting the exterior ofthe said article, and movable toward the cylinder or mandrel, to grasp and hold the article thereon and away from the cylinder or mandrel, to permit said article to be slipped off the same when the ilanging operation is completed.

The invention also consists in the combination, with the bed or frame and the punch ofa press, of a hanging-die ofthe kind above described, adapted to be slid inward under the punch, or outward to permit of the llanged articles being removed, and friction rollers or other devices upon the press bed or frame, by which the sections of the clamp of thellangingdie are closed upon the article to be llanged when the die is moved inward.

(No model.)

In the accompanying drawings, Figure l represents a vertical section of a Hanging die of my improved construction and a side view of portions ofa press wherein the .same is used; and Fig, 2 represents a plan of the die and a horizontal section ofthe press-frame, also showing in dotted outline the die as drawn out from the press, and with the sectional clamp adjusted outward.

Similar letters ot reference designatecorresponding parts in both figures.

'A designates a portion Qt' the frameI of the press, which may be of any suitable construction, and a designates grooves or ways in opposite sides thereof.

B designates a plate which is adapted to slide in the grooves or ways c, and which constitutes the base of the Hanging-die. Upon the upper side of the plate B is rigidly secured by bolts or otherwise a cylinder or mandrel, C, which is iliade ot' a size to conform to the size of the article to be flanged. D designates the said article, which is a cylindric body foratin can or pail, and is adapted to slip snugly upon said cylinder or mandrel.

At the base the cylinder or mandrel C is provided with a ange, C', in which is a small groove, b, at the juncture of the flange and mandrel designed to form a flange upon the lower end of the article D. Surrounding the cylinder or mandrel (l is a sectional clamp, here shown as consisting' of two semi-cylindric sections, E, which, when pressed together, form a cylinder adapted to tit closely upon and all around the exterior ofthe article D.

The clamp-sections E E are formed with flanges E E at their lower ends, which slide upon the llange C', and are secured thereto so as to admit ot this. In the present example of myinvention the clamp sections are secured to the flange C by screws or bolts c, inserted into the ilanges E andtting in slots d in the. ange C', as seen clearly in Fig. l. When not otherwise actuated the clamp-sections E are forced apart by means of suitablyarranged springs or otherwise. As here represented, spiral springs c are inserted between the meeting edges of the sections upon each side near the top, and other spiral springs, e', are attached at one end to the clamp-sections and at the other end to the plate B, as seen in Fig. 2. Both springs e and e serve to move or adjust IOO the clamp-sections E away from the cylinder or mandrel C.

Upon the frame A of the press are pivoted friction-rollers F, which, when the plateB and its die are moved inward, bear against cams E, formed upon the flanges E of the clampsections, and move them inward, and then hold them there.

Projections or stationary' cams might be substituted for the rollers F; but the latter are preferable.

The press is constructed with upright ways A', to which is fitted a drop or a mandrel, G, carrying the punch H. The cylinder or mandrcl U has a vertical groovc,j', in its exterior, as clearly seen in Fig. 2, which receives the longitudinal seam of the article D.

In the operation of my machine the plate B is drawn out by means of a handle, B, or otherwise, and the clamp-sections E move apart, under the inuence of the springs ee,into the position shown in dotted outline in Fig.2. The article D is then slipped upon the cylinder or mandrel C and the plate B moved inward, which brings the cams E2 against the rollers F and forces the clamp'sectionsEinward tightly' against the article D, which is supported eX- ternally by them around'its entire circumference and length. The plunger or drop G and die H then descend with a blow upon the article, and it is driven down to form the ange on the lower end, and its upper edge is turned over to form the other iiange. Alter the danging of each article the plate B is drawn out, the flanged article removed, and another substituted therefor. By means ot' the sectional clamp the article is properly supported externally, and there is no danger of burstingits side seam or seams or distorting its shape in any way.

WhatI claim as my invention, and desire to secure hy Letters Patent, is-

1. The combination, in a Hanging-die, of a. cylinder or mandrel over which the article to be flanged is slipped, and which has a ange at one end and a groove, b, at the juncture of said flange and mandrel, andaclam p composed of two sections adapted to fit the exterior of said article, supported upon said flange and movable toward and from each other, whereby I provide for forming one flange by bending one end of said article outward over the end of said clamp, and a flange on the other end of said article hy forcing the same outward into the groove b, substantially as herein specitied.

2. The combination, with a press frame or bed wherein are horizontal guides or ways, of a base-plate movable in said guides or ways, a cylinder or mandrel having a flange at its lower end, supported upon said plate and adapted to receive upon it an article to be anged, a clamp composed of two sections adapted to t the exterior of said article and movable toward and from each other upon the fiange of said cylinder or mandrel, and devices upon the press which bear upon the clamp-sections as the base-plate is moved inward and force them toward each otl1er,substantially as and for the purpose specified.

` JOHN I). HASS. Witnesses:

FREDK. HAYNES,

ED. MoRAN. 

